Get Cosmopolitan into releasable state

A new rollup tool now exists for flattening out the headers in a way
that works better for our purposes than cpp. A lot of the API clutter
has been removed. APIs that aren't a sure thing in terms of general
recommendation are now marked internal.

There's now a smoke test for the amalgamation archive and gigantic
header file. So we can now guarantee you can use this project on the
easiest difficulty setting without the gigantic repository.

A website is being created, which is currently a work in progress:
https://justine.storage.googleapis.com/cosmopolitan/index.html

libc/stdio/getdelim.c

@@ -50,7 +50,7 @@ ssize_t getdelim(char **line, size_t *n, int delim, FILE *f) {
       if (feof(f) && i) rc = i;
       break;
     }
-    if (i + 2 >= *n && !grow(line, n, 1, 0)) {
+    if (i + 2 >= *n && !__grow(line, n, 1, 0)) {
       fseterrno(f);
       break;
     }